arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.12626cs.GTcs.DS
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带证据的算法规劝

Algorithmic Persuasion with Evidence

Martin Hoefer, Pasin Manurangsi, Alexandros Psomas

AI总结:

本文从计算视角研究带证据劝说博弈的无承诺、信号承诺与委托三种变体,给出困难性、最优近似及特殊情形多项式算法。

摘要:

在一个带证据的劝说博弈中,发送方拥有私人信息。通过出示关于该信息的证据,发送方希望劝说接收方采取单一行动(例如录用一名求职者,或给一名被告定罪)。发送方的效用仅取决于接收方是否采取该行动。接收方的效用同时取决于行动和发送方的私人信息。我们研究三种自然的变体。第一,我们考虑在没有承诺能力的情况下计算该博弈均衡的问题。第二,我们考虑一种劝说变体,其中发送方承诺采用某种信号方案,而接收方在看到证据后决定是否采取行动。第三,我们研究一种委托变体,其中接收方首先承诺:若被出示某些证据,就采取行动;随后发送方出示证据,以最大化行动被采取的概率。我们从计算视角研究这些变体,并给出困难性结果、最优近似算法以及适用于特殊情形的多项式时间算法。在我们的结果中,有一个对半定规划进行舍入的近似算法,它可能具有独立的研究价值,因为据我们所知,这是算法经济学中首个此类近似算法。

英文摘要:

In a game of persuasion with evidence, a sender has private information. By presenting evidence on the information, the sender wishes to persuade a receiver to take a single action (e.g., hire a job candidate, or convict a defendant). The sender's utility depends solely on whether or not the receiver takes the action. The receiver's utility depends on both the action and the sender's private information. We study three natural variations. First, we consider the problem of computing an equilibrium of the game without commitment power. Second, we consider a persuasion variant, where the sender commits to a signaling scheme and the receiver, after seeing the evidence, takes the action or not. Third, we study a delegation variant, where the receiver first commits to taking the action if being presented certain evidence, and the sender presents evidence to maximize the probability the action is taken. We study these variants through the computational lens, and give hardness results, optimal approximation algorithms, and polynomial-time algorithms for special cases. Among our results is an approximation algorithm that rounds a semidefinite program that might be of independent interest, since, to the best of our knowledge, it is the first such approximation algorithm in algorithmic economics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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